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authorGleb Natapov <gleb@redhat.com>2009-03-23 11:23:18 +0200
committerAvi Kivity <avi@redhat.com>2009-06-10 11:48:31 +0300
commitfe4c7b1914ac46af751d256f5a20c2e12dcbaaae (patch)
tree4533d4a230e64bab951f2b4f7d7147e309a11ee5 /arch/x86/kvm/x86.h
parent61c50edfcd40be9126579f9cec68c789b6089998 (diff)
KVM: reuse (pop|push)_irq from svm.c in vmx.c
The prioritized bit vector manipulation functions are useful in both vmx and svm. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.h')
-rw-r--r--arch/x86/kvm/x86.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 6a4be78a738..2ab679102dc 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -19,4 +19,22 @@ static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
vcpu->arch.interrupt.pending = false;
}
+static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu)
+{
+ int word_index = __ffs(vcpu->arch.irq_summary);
+ int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
+ int irq = word_index * BITS_PER_LONG + bit_index;
+
+ clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
+ if (!vcpu->arch.irq_pending[word_index])
+ clear_bit(word_index, &vcpu->arch.irq_summary);
+ return irq;
+}
+
+static inline void kvm_push_irq(struct kvm_vcpu *vcpu, u8 irq)
+{
+ set_bit(irq, vcpu->arch.irq_pending);
+ set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
+}
+
#endif